With this extra evidence JohnSnow was able to announce with certainty that polluted water carried the disease.
有了这个证据,约翰·斯诺就能够肯定的宣布,这种被污染的水携带病毒。
2
JohnSnow, the doctor who administered the drug, is better known as one of the founding fathers of epidemiology, after he traced a deadly outbreak of cholera to a Soho water pump.
To prevent this from happening again, JohnSnow suggested that the source of all water supplies be examined and new methods of dealing with polluted water be found.